Swirl Chamber Vibration Damping Device
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Solution Overview
Problem
Existing vibration-damping devices face challenges in simplifying structure and manufacturing while maintaining product characteristics, particularly due to dynamic spring constant increases from clogging and frequency mismatch issues with unintended vibrations.
Innovation Solution
A vibration-damping device featuring a tubular structure with a partitioning member that includes swirl chambers and flow regulation passages, allowing liquid to swirl and increase pressure loss, thereby absorbing and damping vibrations of different frequencies without structural bulkiness, and suppressing dynamic spring constant rises during low flow speeds.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a plunger member and multiple limiting passages are used to damp vibrations, then vibration damping performance is improved, but device complexity and manufacturing difficulty increase
Solution Approach 1:
The patent removes the plunger member from the system entirely, extracting the moving component that caused complexity. Instead, it uses fixed swirl chambers that generate swirling flow through their geometry alone, achieving vibration damping without mechanical moving parts.
Solution Approach 2:
The patent replaces the mechanical plunger member system with a fluid dynamics-based swirl chamber system. The swirling flow of liquid through the specially designed chambers provides vibration damping through fluid mechanics rather than mechanical movement.
2Reliability
If limiting passage dimensions are optimized for specific vibration frequencies, then resonance damping is improved, but unintended high-frequency vibrations cause clogging and dynamic spring constant increase
Solution Approach 1:
The swirl chambers are designed to dynamically adapt their flow characteristics based on input vibration conditions. The swirling flow naturally adjusts its intensity and behavior depending on the frequency and amplitude of incoming vibrations, providing broad-frequency damping without fixed resonance constraints.
Solution Approach 2:
The patent changes the flow parameters through swirl chamber geometry that promotes intense swirling flow. This alters the liquid's effective viscosity and flow resistance characteristics, enabling damping across a wide frequency range while preventing clogging through continuous fluid motion.
3Ease of manufacture
If the device structure is simplified for easier manufacture, then manufacturing facilitation is improved, but vibration damping effectiveness may be compromised
Solution Approach 1:
The partitioning member is divided into multiple separate swirl chambers, each independently formed. This segmentation allows each chamber to be precisely manufactured with consistent geometry while simplifying the overall assembly process and enabling modular production.
Solution Approach 2:
The patent uses hydraulic principles where liquid flow through the swirl chambers provides the damping mechanism. The fluid dynamics approach eliminates complex mechanical components, simplifying manufacturing while maintaining effective vibration damping through carefully designed flow paths.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The device achieves simplification of structure and manufacturing while effectively damping various vibrations, including those with higher frequencies, by utilizing swirling liquid flow to manage pressure loss and resonance, ensuring consistent product performance.
Implementation Method 1
The first and second swirl chambers are formed so that a liquid flowing into the interiors of the chambers from the flow regulation passage is swirled according to the flow speed of the liquid
Implementation Method 2
the pressure loss of a liquid increases due to an energy loss caused by forming a swirling flow, an energy loss caused by the friction between a liquid and the wall surface of one swirl chamber
Implementation Method 3
an elastic body coupling both of the attachment members
Implementation Method 4
a vibration-damping device that is applied to, for example, automobiles, industrial machines, or the like, and absorbs and damps vibrations of vibration generating parts
Data Source
AI summary
Swirl chamber units (31) allowing a first liquid chamber (14) and a second liquid chamber (15) to communicate with each other are formed in a partitioning member of a vibration-damping device (10) of the present invention. Each swirl chamber unit (31) includes a first communication hole (32a) opening to the first liquid chamber (14), and a second communication hole (32b) opening to the second liquid chamber (15); a first swirl chamber (33a) communicating with the first liquid chamber (14) via the first communication hole (32a), and a second swirl chamber (33b) communicating with the second liquid chamber (15) via the second communication hole (32b); and a flow regulation passage (34) that allows the first swirl chamber (33a) and the second swirl chamber (33b) to communicate with each other and opens to the swirl chambers (33a, 33b) in circumferential directions of the respective swirl chambers (33a, 33b). The first and second swirl chambers (33a, 33b) are formed so that a liquid flowing into the interiors of the chambers from the flow regulation passage (34) is swirled according to the flow speed of the liquid. By including the configuration as described above, simplification of structure and facilitation of manufacture can be achieved, while guaranteeing the product characteristics of the vibration-damping device.